- A
All traffic from 192.168.1.0/24 will be translated to the IP address of GigabitEthernet0/0 using PAT.
Correct. The 'overload' keyword enables PAT, translating multiple inside hosts to a single outside IP.
- B
Only one host from 192.168.1.0/24 can access the internet at a time.
Why wrong: Incorrect. PAT allows multiple hosts to share the same IP address by using different port numbers.
- C
Traffic from the outside interface will be translated to 192.168.1.0/24.
Why wrong: Incorrect. This is source NAT; destination NAT would require 'ip nat outside source'.
- D
The configuration will fail because the access list must be applied to an interface.
Why wrong: Incorrect. The access list is referenced by the NAT command and does not need to be applied to an interface.
Quick Answer
The answer is that all traffic from 192.168.1.0/24 will be translated to the IP address of GigabitEthernet0/0 using PAT. This is correct because the configuration combines a standard access-list identifying the inside network with the `ip nat inside source list 1 interface GigabitEthernet0/0 overload` command, which forces the router to perform Port Address Translation, mapping multiple private addresses to a single public IP by differentiating sessions via unique port numbers. On the ENCOR 350-401 exam, this scenario tests your ability to distinguish NAT overload from static or dynamic NAT, often appearing in a "what is the effect" multiple-choice question where a common trap is confusing the inside interface address (192.168.1.1) with the translated source address. Remember the key memory tip: "overload equals PAT, one IP for all."
350-401 WAN Technologies Practice Question
This 350-401 practice question tests your understanding of wan technologies. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
interface GigabitEthernet0/0 ip address 10.0.0.1 255.255.255.0 ip nat outside
!
interface GigabitEthernet0/1 ip address 192.168.1.1 255.255.255.0 ip nat inside
!
access-list 1 permit 192.168.1.0 0.0.0.255
!
ip nat inside source list 1 interface GigabitEthernet0/0 overload
What is the effect of this configuration?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
All traffic from 192.168.1.0/24 will be translated to the IP address of GigabitEthernet0/0 using PAT.
This is a standard NAT overload (PAT) configuration. The inside network 192.168.1.0/24 is translated to the IP address of the outside interface (GigabitEthernet0/0) using port address translation. All inside hosts share the outside interface IP address.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
All traffic from 192.168.1.0/24 will be translated to the IP address of GigabitEthernet0/0 using PAT.
- ✗
Only one host from 192.168.1.0/24 can access the internet at a time.
Why it's wrong here
Incorrect. PAT allows multiple hosts to share the same IP address by using different port numbers.
- ✗
Traffic from the outside interface will be translated to 192.168.1.0/24.
Why it's wrong here
Incorrect. This is source NAT; destination NAT would require 'ip nat outside source'.
- ✗
The configuration will fail because the access list must be applied to an interface.
Why it's wrong here
Incorrect. The access list is referenced by the NAT command and does not need to be applied to an interface.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Trap categories for this question
Command / output trap
Incorrect. The access list is referenced by the NAT command and does not need to be applied to an interface.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
- Static NAT maps one inside address to one outside address.
- PAT allows many inside hosts to share one public address using ports.
- Inside local and inside global describe the private and translated addresses.
- NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
- Identify inside and outside interfaces first.
- Check whether the scenario needs static NAT, dynamic NAT or PAT.
- Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
How this comes up in practice
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
What to study next
Got this wrong? Here's your next step.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 350-401 NAT questions on configuration and troubleshooting.
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FAQ
Questions learners often ask
What does this 350-401 question test?
WAN Technologies — This question tests WAN Technologies — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: All traffic from 192.168.1.0/24 will be translated to the IP address of GigabitEthernet0/0 using PAT. — This is a standard NAT overload (PAT) configuration. The inside network 192.168.1.0/24 is translated to the IP address of the outside interface (GigabitEthernet0/0) using port address translation. All inside hosts share the outside interface IP address.
What should I do if I get this 350-401 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 350-401 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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Last reviewed: Jun 18, 2026
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